What is the typical diesel-to-gasoline ratio used in a drip torch?

• A. 2:1
• B. 1:1
• C. 3:1
• D. 4:1

Answer: (C)

In a drip torch, the fuel mix is chosen to balance how easily the flame lights with how steady and controllable it stays. Diesel serves as the base fuel because it burns slowly and steadily, producing a predictable flame that’s easier to control in field conditions. Gasoline is added in a smaller amount to help ignition and keep the flame burning reliably without making it too volatile.

A 3:1 diesel-to-gasoline mix hits that balance: enough gasoline to light the torch quickly and sustain the flame when needed, but enough diesel to keep the burn steady and less prone to erratic flare-ups. Too much gasoline would make the flame more volatile and harder to manage; too little would slow ignition and reduce flame reliability.